HomeAuthorsPosts by Sundareswaran Iyalunaidu

Sundareswaran Iyalunaidu

With over 24 years of dedicated experience, I am a seasoned professional specializing in the commissioning, maintenance, and installation of Electrical, Instrumentation and Control systems. My expertise extends across a spectrum of industries, including Power stations, Oil and Gas, Aluminium, Utilities, Steel and Continuous process industries. Tweet me @sundareshinfohe
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Communication

PROFIBUS Communication Failure Step by Step Diagnosis

Table of ContentsWhat Is a PROFIBUS Communication Failure?Common PROFIBUS Communication Failure SymptomsPROFIBUS Communication Failure vs PROFIBUS Slave FailureCommon Causes of PROFIBUS Communication ErrorsHow to Troubleshoot PROFIBUS Communication FailureStep 1 Identify the PROFIBUS Failure PatternStep 2 Check PLC and PROFIBUS Master & Slave DiagnosticsStep 3...
Instrumentation Calculators

Measurement Uncertainty Calculator: Calculate Combined and Expanded Uncertainty Using GUM

Measurement Uncertainty Calculator - GUM Method #muc-wrap, #muc-wrap * { box-sizing: border-box !important; } #muc-outer { background: #eef2f8 !important; background-image: linear-gradient(rgba(15,23,42,0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(15,23,42,0.045)...
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Temperature Measurement

Why 4 wire RTD’s measurement accuracy is better than 2 and 3 wire RTD?

Table of ContentsRTD Measurement: An Overview The Requirement for CompensationBenefits of 4-Wire RTD MeasurementLead Wire...
Industrial Automation

All sensors are transducers but all transducers are not sensors

Table of ContentsUnderstanding the Interaction of Sensors and Transducers in Process Instrumentation Examples and DifferencesDefining...
Valves

Control Valves in Process Industries: A Collection of In-Depth Articles

Control Valve Difference Between Single Seated & Double Seated Control Valves Working of Temperature Control Valve...
Instrumentation Questions

Proximity Switch – MCQ1

We will discuss proximity switch questions and answers in this post, along with information...
Valves

Valves: Resource for Professionals in the Process Industry

Types of Valves Types of Valves Globe Valve, Types of Globe Valve Types of Valves Used in...
DCS

Network Switches requirements in “SCADA” and “DCS” Architecture

Network switches are essential for maintaining reliable and effective communication between various devices, sensors,...
Valves

Explain the difference between a Control Valve and a Shut-Off Valve and give an example of when you would use each

Table of ContentsWhat is a Control Valve?What is a Shut-Off Valve?Differentiate between Control Valve,...
Instrumentation Questions

Instrumentation and Process Control Quiz Hub – 1000+ MCQs for Engineers

Welcome to the most comprehensive collection of Instrumentation and Control quizzes – curated for...
Valves

Fail Open Vs Fail Close valves

Table of ContentsWhat is fail open and fail close valve?What is FO and FC...
How to

How to read the data sheet of a pressure switch

Understanding how to interpret a pressure switch's instrument data sheet (gauge pressure, differential pressure,...
Instrumentation Calculators

Unloaded Steam Cost calculator

What is the unloaded steam cost? The fundamental comparison between the amount of steam we...
Industrial Automation

Industrial communication protocols

Table of ContentsModbusEthernetProfibusDeviceNetOSIFieldbusHARTFiber opticsRS-232 RS-422 or RS-485 protocolsWireless communicationOther communication protocolsTrouble shooting communication systemHardware...
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Latest articles

Communication

PROFIBUS Communication Failure Step by Step Diagnosis

Table of ContentsWhat Is a PROFIBUS Communication Failure?Common PROFIBUS Communication Failure SymptomsPROFIBUS Communication Failure...
Instrumentation Calculators

Measurement Uncertainty Calculator: Calculate Combined and Expanded Uncertainty Using GUM

Measurement Uncertainty Calculator - GUM Method #muc-wrap, #muc-wrap * { box-sizing: border-box !important;...
SIS/ESD

Shutdown Philosophy: Engineering Documentation for Process Safety and Emergency Shutdown Systems

Table of ContentsWhat is Shutdown Philosophy and Why is it Important? What Is a Shutdown...
Procedures

Hydraulic System Pressure Switch Troubleshooting: Step by Step Safe Procedure

Table of ContentsWhat Is a Hydraulic Pressure Switch and How Does It Work?Hydraulic Pressure...